china blacks out cnn's broadcast signal whenever we talk about hacking from china in any way, shape or form. sandra endo is in washington, d.c., good morning. >> good morning, the american cyber security firm mandiant says it's linked the prolific hackers to the chinese government t traced the activity of four networks near shanghai with some of the operations taking place in a building housing a secret division of china's military. the report claims over a six-year period hackers have stolen large volumes of intellectual property, blueprints and business plans but the report does not list the companies that have been hacked. the chinese government dismissed the claims saying china is also a victim of cyber crimes and claims most of their attacks come from the united states. >> translator: internet hack something an international issue. it should be dealt with through international cooperation based on trust and mutual respect. making baseless accusations based on premature analysis is irresponsible and unprofessional. and it doesn't help solve irrelevant issues. china resolutely -- >>